Who played Nina Sayers in 'Black Swan'?

Who played Joel Barish in 'Eternal Sunshine of the Spotless Mind'? In which film is Joel Barish a character? Who played Clementine Kruczynski in 'Eternal Sunshine of the Spotless Mind'? In which film is Clementine Kruczynski a character? Who played Harry Stamper in 'Armageddon'? Who played Malcolm Crowe in 'The Sixth Sense'? In which film is Malcolm Crowe a character? Who played Cole Sear in 'The Sixth Sense'?